* Reduce logo.svg even more
While reading through commits to helix I saw
https://github.com/helix-editor/helix/pull/9106 and wondered if the
relatively-new-to-me svgo would do better than -95B diff, indeed it
does. Seeing as this file is "a minified file we're basically treating
as binary" anyway I figured might as well minify it further.
* Minimize all the svg logos